EP 3997382 A4 20230301 - MULTIVIEW BACKLIGHT, DISPLAY, AND METHOD HAVING A MULTIBEAM ELEMENT WITHIN A LIGHT GUIDE
Title (en)
MULTIVIEW BACKLIGHT, DISPLAY, AND METHOD HAVING A MULTIBEAM ELEMENT WITHIN A LIGHT GUIDE
Title (de)
MEHRANSICHTS-RÜCKBELEUCHTUNG, ANZEIGEVORRICHTUNG UND VERFAHREN MIT EINEM MEHRSTRAHLELEMENT INNERHALB EINES LICHTLEITERS
Title (fr)
DISPOSITIF DE RÉTROÉCLAIRAGE À VUES MULTIPLES, DISPOSITIF D'AFFICHAGE ET PROCÉDÉ AYANT UN ÉLÉMENT À FAISCEAUX MULTIPLES À L'INTÉRIEUR D'UN GUIDE DE LUMIÈRE
Publication
Application
Priority
US 2019041481 W 20190711
Abstract (en)
[origin: WO2021006915A1] A multiview backlight having applications in a multiview display employs an array of multibeam elements located a predetermined distance below a top surface of a light guide in the multiview backlight. The multibeam elements may be configured to scatter out through the top surface a portion of guided light from the light guide as directional light beams having different principal angular directions corresponding to different views of the multiview display. For example, the multibeam elements each may comprise one or more of a diffraction grating, a micro-reflective element, and a micro-refractive element. Moreover, the multiview display may include an array of light valves configured to modulate the directional light beams as a multiview image to be displayed by the multiview display, and the predetermined distance may be greater than one quarter of a size of a light valve of the set of light valves.
IPC 8 full level
G02B 30/33 (2020.01); G02B 5/02 (2006.01); G02B 6/122 (2006.01); G02F 1/13357 (2006.01)
CPC (source: EP KR US)
G02B 5/0252 (2013.01 - EP KR US); G02B 5/0278 (2013.01 - EP KR US); G02B 6/0036 (2013.01 - EP KR US); G02B 30/33 (2020.01 - EP KR US); H04N 13/32 (2018.05 - EP KR); H04N 13/351 (2018.05 - EP KR)
Citation (search report)
- [XAI] WO 2018067381 A1 20180412 - LEIA INC [US]
- [X] WO 2018182743 A1 20181004 - LEIA INC [US]
- [A] US 2018306965 A1 20181025 - FATTAL DAVID A [US]
- [A] US 2018299608 A1 20181018 - FATTAL DAVID A [US], et al
- [A] US 2018188691 A1 20180705 - FATTAL DAVID A [US]
- [A] WO 2018208309 A1 20181115 - LEIA INC [US]
- [A] WO 2018231257 A1 20181220 - LEIA INC [US]
- [A] WO 2017213676 A1 20171214 - LEIA INC [US]
- [A] WO 2019125394 A1 20190627 - LEIA INC [US]
- See also references of WO 2021006915A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2021006915 A1 20210114; CA 3146277 A1 20210114; CA 3146277 C 20231212; CN 114144616 A 20220304; EP 3997382 A1 20220518; EP 3997382 A4 20230301; JP 2022540131 A 20220914; JP 7446404 B2 20240308; KR 20220024504 A 20220303; TW 202120975 A 20210601; TW I747368 B 20211121; US 2022113554 A1 20220414
DOCDB simple family (application)
US 2019041481 W 20190711; CA 3146277 A 20190711; CN 201980098369 A 20190711; EP 19936674 A 20190711; JP 2022500784 A 20190711; KR 20227001057 A 20190711; TW 109123119 A 20200709; US 202117555268 A 20211217